16 Kanal Wifi Relais Modul mit Optokoppler 5V nützlich für Home Smart Control
11,31 €
2, The use of industry quality isolation optocoupler, anti-interference ability, stable performance; trigger current only 3mA;. 1, With optocoupler protection. i/o port drive low level effective. Cupboard Lock Kirsite Desk Cabinet Locks Practical Portable Hardware Accessories.
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